Attention Deficit Disorder with Hyperactivity [Disease/Finding] Attention Deficit Disorder with Hyperactivity Hyperkinetic Syndrome 1023721 C1263846 Attention Deficit Hyperactivity Disorder 31177006 7461003 C1198 D001289 A behavior disorder originating in childhood in which the essential features are signs of developmentally inappropriate inattention, impulsivity, and hyperactivity. Although most individuals have symptoms of both inattention and hyperactivity-impulsivity, one or the other pattern may be predominant. The disorder is more frequent in males than females. Onset is in childhood. Symptoms often attenuate during late adolescence although a minority experience the full complement of symptoms into mid-adulthood. (From DSM-IV) Attention Deficit Disorders with Hyperactivity N0000000510 406506008 M0001943 Attention Deficit Hyperactivity Disorders Attention Deficit Disorder with Hyperactivity Attention Deficit and Disruptive Behavior Disorders [Disease/Finding]